This thread just cleared up a mystery for me. A friend of my showed me his new ultra secure passport shield that blocked "scanning" that was highly recommended to him before his trip to China.
I thought he was nuts and was just a step away from showing up with an aluminum foil cone on his head to thwart those pesky CIA mind probes. LOL.
Now, at least, I know my friend isnt losing it.
If anyone is interested in the passport shield, let me know and Ill ask him where he got it.